Very Large Capacitors Have Been Considered as a Means for Storing

question 56

Multiple Choice

Very large capacitors have been considered as a means for storing electrical energy.If we constructed a very large parallel-plate capacitor of plate area 1.4 m² using paper (κ = 3.7) of thickness 1.7 mm as a dielectric,how much electrical energy would it store at a plate voltage of 5,020 V? (ε₀ = 8.85 × 10−¹² C²/N⋅m²)

• A) 0.3 J
• B) 68 J
• C) 6,796 J
• D) 13,591 J
• E) ​27,183 J

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